Disassembling The Crankcase; Checking The Crankcase; Assembling The Crankcase - Yamaha 2014 MT-07 Service Manual

EAS30389

DISASSEMBLING THE CRANKCASE

1. Place the engine upside down.
2. Remove:
• Crankcase bolt (×27)
TIP
• Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
• Loosen the bolts "1"–"11" in any loosening se-
quence.
• Loosen the bolts "12"–"27" in the proper se-
quence as shown.
• The numbers embossed "1"–"16" on the crank-
case indicate the crankcase tightening se-
quence.
• M6 × 40 mm bolt (×8): "1", "2", "4"–"7", "10",
"11"
• M6 × 60 mm bolt (×3): "3", "8", "9"
• M6 × 65 mm bolt (×2): "12", "13"
• M8 × 65 mm bolt (×2): "14", "15"
• M8 × 70 mm bolt (×6) (bolts with O-rings):
"16"– "21"
• M9 × 80 mm bolt (×6) (bolts with washers):
"22"–"27"
×8
×3 ×2
14
5
15
12
26
22
25 27
16 20
21
19
6
3. Remove:
• Crankcase
• Dowel pins
×2
×6 ×6
2 1
4
3
11
10
24
23
9
18
17
8
13
7
ECA13900
NOTICE
Tap on one side of the crankcase with a soft-
face hammer. Tap only on reinforced por-
tions of the crankcase, not on the crankcase
mating surfaces. Work slowly and carefully
and make sure the crankcase halves sepa-
rate evenly.
EAS30390

CHECKING THE CRANKCASE

1. Thoroughly wash the crankcase halves in a
mild solvent.
2. Thoroughly clean all the gasket surfaces and
crankcase mating surfaces.
3. Check:
• Crankcase
Cracks/damage → Replace.
• Oil delivery passages
Obstruction → Blow out with compressed air.
EAS30397

ASSEMBLING THE CRANKCASE

1. Lubricate:
• Crankshaft journal bearing inner surface
(with the recommended lubricant)
Recommended lubricant
Engine oil
2. Apply:
• Sealant
(onto the crankcase mating surfaces)
Yamaha bond No. 1215
90890-85505
(Three bond No.1215®)
ECA20880
NOTICE
Do not allow any sealant to come into con-
tact with the oil gallery, crankshaft journal
bearings, or balancer shaft journal bearings.
5-71
CRANKCASE